High turnover rates in online communities suggest the need for measures that move non-sustained community members towards sustained participation. Non-sustained members actively seek inclusion opportunities, but are often disappointed by the lack of access to existing members. One method of inclusion can be contact with existing members through dialogue on discussion boards. Understanding the structure of interactions between sustained and non-sustained members and can inform new strategies to address the high turnover rate and ensure community longevity. In this poster, we analyze the network structure of newcomer and existing member interaction through discussion posts. Through analysis of a citizen science community we ask: Are non-sustained and sustained participants engaged in conversations? The researcher analyzes the topological features of an affiliation network and centrality measures to determine the extent of interactions between these two groups. Finally, the researcher presents strategies to engage non-sustained participants in online.